Pure CORBA

Adding an IDL Interface for Searching—Example 2

The second example adds the SearchableCollection IDL interface. This interface supports a single operation, find_by_title(), to let you search for a particular book. The structure and sequence IDL types are introduced as well.

Listing 2.9 shows the second draft of the BookRepository IDL module, with these additions.

Listing 2.9. IDL BookRepository Module for Example 2

//IDL module BookRepository { typedef long ISBN; struct PersonName { string first_name; string second_name; }; struct Date { short day; short month; short year; }; struct BookDetails { PersonName author; string title; ISBN book_id; Date publication_date; }; typedef sequence<BookDetails> BookDetailsSeq; enum FuzzyBoolean {NO, YES, UNKNOWN}; ...